build: fix 'implicit-function-declaration' on OpenHarmony platform

PR-URL: #59547
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

Author: hqzing

deps/uvwasi/uvwasi.gyp

@@ -28,7 +28,7 @@
         'include_dirs': ['include']
       },
       'conditions': [
-        [ 'OS=="linux"', {
+        [ 'OS=="linux" or OS=="openharmony"', {
           'defines': [
             '_GNU_SOURCE',
             '_POSIX_C_SOURCE=200112',